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Daxinomega
Hi all,

I got this rock from charmouth, saw the circles on it's face and thought I must crack it open and see what treasure maybe inside. Today being sunnyish I decided to go outside and hit it, but then as the rain had made it wet I noticed a bit more detail, so my question is how would you proceed with something like this? Click image for larger version - Name: 20191016_101050.jpg, Views: 32, Size: 254.54 KB Click image for larger version - Name: 20191016_100853.jpg, Views: 37, Size: 304.88 KB Click image for larger version - Name: 20191016_100909.jpg, Views: 35, Size: 245.63 KB Click image for larger version - Name: 20191016_100901.jpg, Views: 35, Size: 275.28 KB Click image for larger version - Name: 20191016_100937.jpg, Views: 33, Size: 183.83 KB Click image for larger version - Name: 20191016_100922.jpg, Views: 33, Size: 226.75 KB Click image for larger version - Name: 20191016_100959.jpg, Views: 34, Size: 248.41 KB Click image for larger version - Name: 20191016_100950.jpg, Views: 34, Size: 143.91 KB Click image for larger version - Name: 20191016_101020.jpg, Views: 34, Size: 150.36 KB Click image for larger version - Name: 20191016_101007.jpg, Views: 32, Size: 175.24 KB
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Brittle Star
Hi
What you can see on the surface are bits of bivalves and one section through a gastropod.
Smacking it with a lump hammer may break it but no guarantee that you will find anything inside, worth giving it a go I suppose, please wear safety glasses. It looks like a pretty solid boulder so you may just chip it.
JW

 Never ask a star fish for directions
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prep01
Hi, I have enlarged / tweaked these photos and can only see hundreds of sections of shell fragments and other bits in various axes and (the long ones) lines of Calcite veins. I do see an outline (photo 6) of the outer whorl of quite a large ammonite. As to what to do next..... I would use a crack hammer (club type hammer) on it, firstly to see if there is anymore of the ammonite inside the nodule by trying to split it parallelto and close to the reverse side of it (I hope you get what I'm saying)? Caviat1 - the Calcite is a slight weakness and it may split along these and 2 I don't see any 'bedding planes' or cracks to help ypou - it might well shatter!
I hope you have a strong arm and have an extra Weetabix for breakfast! Oh and take suitable health and safety precautions.
Good luck!
Colin Huller
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Daxinomega
And the story so far, big hammer, little fossil, prep work needed to see if it's anything though... Click image for larger version - Name: 20191016_143851.jpg, Views: 18, Size: 305.37 KB Click image for larger version - Name: 20191016_143839.jpg, Views: 21, Size: 347.81 KB Click image for larger version - Name: 20191016_143926.jpg, Views: 20, Size: 294.67 KB Click image for larger version - Name: 20191016_143905.jpg, Views: 21, Size: 285.33 KB
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prep01
Hmm...to be honest, I think it's a very small bivalve / brachiopod or a small stone and not worth anymore effort unless you open it up more - remember there are lots more nodules on the beach!
Colin Huller
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